JP7326800B2 - Electronic musical instrument, control method and program for electronic musical instrument - Google Patents

Description

The present invention relates to an electronic musical instrument, an electronic musical instrument control method, and a program.

Techniques have been proposed to avoid a reduction in the number of simultaneously sounding channels while supporting a plurality of tone generator systems, and to enable synthesis of musical tones with a high degree of freedom. (For example, Patent Document 1)

JP-A-2000-221981

In an electronic musical instrument that synthesizes organ musical tones using a plurality of sine wave data, including the technology described in Patent Document 1, the sine wave data stored in a memory is read out at different pitches for each of a plurality of sound source channels, Each is accumulated, and the accumulated sound data is temporarily held in a specific area of memory. Then, the waveform data synthesized at each pitch of the organ sound stored in the memory is read out by a sound source channel different from that at the time of storage, resynthesized, and output.

In this type of electronic musical instrument, for example, nine sound source channels for generating pitch tones of different lengths and one sound source channel for generating memory write addresses using the waveform generation addresses of the sound source channels are used for the organ. A total of 10 sound source channels are required for waveform generation.

These sound source channels are used for other musical sound reproduction when no organ sound is selected. On the other hand, the dedicated mixer accumulation function for accumulating and synthesizing waveform data of organ sounds is not used when organ sounds are not selected.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances as described above, and an object thereof is to provide an electronic musical instrument, a control method for the electronic musical instrument, and a program that make good use of each circuit in the tone generator.

According to one aspect of the present invention, a first processor, a memory that stores waveform data, and output adjusted data obtained by adjusting an output level of generated data generated based on the waveform data that is read from the memory. A plurality of sound source channels each having a plurality of multipliers, and a plurality of accumulation registers for respectively accumulating the adjustment data output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulated data. a second processor for outputting a musical tone signal corresponding to the accumulated data held in each of the plurality of accumulation registers; and a tone color selection operator for selecting one tone color from a plurality of tone colors including the tone color of a drawbar organ. and, when the timbre of the drawbar organ is selected based on the user's manipulation of the timbre selection operator, the first processor accumulates any one of the plurality of accumulation registers. storing the accumulated data held in a register in the memory; reading the accumulated data stored in the memory into one of the plurality of tone generator channels; When a tone color other than the tone color of the drawbar organ is selected, the accumulated data held in any of the accumulation registers is read, and software processing is performed on the read accumulation data. The result data obtained by the above is held in any of the accumulation registers.

According to the present invention, each circuit in the tone generator can be effectively utilized.

1 is a block diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention; FIG. FIG. 2 is a block diagram mainly showing a detailed circuit configuration of a sound source section and its periphery according to the embodiment; FIG. 2 is a block diagram showing a common circuit configuration of each accumulation register that constitutes the mixer according to the embodiment; FIG. 4 is a functional block diagram showing processing contents on software when distortion processing is executed by an expansion processing unit of the DSP according to the embodiment; FIG. 4 is a block diagram showing a configuration for generating waveform data when a drawbar organ is selected according to the embodiment; FIG. 5 is a diagram illustrating processing of waveform data when the slicer according to the embodiment is selected; 4 is a flow chart showing the details of processing executed at any time during a timbre change operation, showing the details of processing according to the embodiment; FIG. 10 is a flow chart showing the details of processing executed by the CPU upon receiving an interrupt signal from the sampling synchronization interrupt generator of the DSP according to the same embodiment for the fifth accumulation register; FIG. 4 is a flow chart showing the contents of processing executed in response to an interrupt signal generated in each sampling period according to the embodiment; 4 is a flow chart showing details of processing executed in response to an interrupt signal generated in response to beat timing according to the embodiment;

An embodiment of the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a block diagram showing the overall configuration of an electronic musical instrument 10 according to this embodiment. In the figure, operation signals from a keyboard unit 11 and a key operation unit 12 having various operation keys are input to a CPU 13 of an LSI chip CH. The CPU 13 stores, via the bus B in the LSI chip CH, a ROM 14 which stores an operation program for this electronic musical instrument, fixed form data including waveform data for various timbres, etc., and temporarily stores waveform data when musical tones are generated. It is connected to a RAM 15 , a sound source section 16 that generates digital voice data corresponding to the content of an operation, and a DAC 17 .

The CPU 13 transmits parameters such as pitch and volume to the sound source section 16 according to operation signals received from the keyboard section 11 and the key operation section 12 . The sound source section 16 receiving this outputs the corresponding digital audio data to the DAC 17 .

The DAC 17 converts the digital audio data input from the tone generator 16 into an analog audio signal, and outputs the analog audio signal to an amplifier (amp) 18 outside the LSI chip CH. A loudspeaker 19 is driven by an analog audio signal amplified by an appropriate amplification factor in the amplifier 18 to emit sound.

FIG. 2 is a block diagram mainly showing the detailed circuit configuration of the tone generator section 16 and its periphery. The CPU 13 is supplied with an operation signal associated with a performance on the keyboard section 11 and operation signals of the tone color selection operator 12A and the drawbar operator 12B constituting the key operation section 12 .

The timbre selection operator 12A is an operation unit for selectively operating a musical instrument, an acoustic effect function, and the like, and the musical instrument includes a drawbar organ.

The drawbar operator 12B includes nine slide key operating sections that become drawbars of the drawbar organ when the drawbar organ is selected as the musical instrument. The drawbar is an operator whose operation amount is continuous, corresponding to the stop (sound plug) of a pipe organ. /3 [ft]" "8 [ft]" "4 [ft]" "2-2/3 [ft]" "2 [ft]" "1-3/5 [ft]" "1-1/3 [ft]” and “1 [ft]”.

The drawbar operation element 12B has operability such that the volume increases when each slide key is pulled down toward the front side, and when it is pushed up to the far side, the volume of the corresponding sound is "0 (zero)." )”, and the maximum volume is reached when it is pulled down to the front side.

When the drawbar organ is not selected as the musical instrument, the drawbar operator 12B can continuously control other functions, such as the volume balance of each input/output channel in the mixer function and the frequency characteristics in the equalizer function, by operating the slide keys. It becomes an operator that variably adjusts to

The sound source section 16 has sound source channels 21-1, 21-2, .

Sound source channels 21-1, 21-2, . The sound source channel 21-1 will be described below as a representative. The sound source channel 21-1 has a waveform interpolator 31, a DC filter (direct current filter) 32, a DC amplifier (direct current amplifier) 33, and multipliers 34a to 34e.

Based on the waveform data read out from the RAM 15, the waveform interpolation unit 31 executes compression/expansion in the time axis direction and waveform interpolation processing according to the scale information instructed by the CPU 13, and outputs the data to the DC filter 32. do.

The DC filter 32 adjusts the sound quality by removing the high frequency component of the interpolated waveform data output from the waveform interpolator 31 based on the scale information instructed by the CPU 13, and applies the adjusted waveform data to the DC amplifier. 33.

The DC amplifier 33 adjusts the volume by variably setting the amplitude of the waveform data output by the DC filter 32 based on the volume information instructed by the CPU 13, and outputs the adjusted waveform data to the multipliers 34a to 34e. .

The multipliers 34a to 34e each execute multiplication according to a multiplier indicated by the CPU 13, and the obtained waveform data are stored in the first accumulation register 22A, the second accumulation register 22B, and the third accumulation register 22A of the mixer 22. Output to the accumulation register 22C, the fourth accumulation register 22D, and the fifth accumulation register 22E for holding.

As described above, a total of 64 channels of circuits having the same configuration as the sound source channel 21-1 are provided, and waveform data of up to 64 channels are output to the accumulation registers 22A to 22E of the mixer 22 and held therein. be.

The first accumulation register 22A of the mixer 22 is a register for accumulating and holding the waveform data of the main sound of the right channel (Rch).

The second accumulation register 22B is a register for accumulating and holding the waveform data of the main sound of the left channel (Lch), and the contents held therein are read out to the adder 23C of the DSP 23. FIG.

The third accumulation register 22C is a register for accumulating and holding waveform data for chorus.

The fourth accumulation register 22D is a register that accumulates and holds reverb waveform data, and the content held therein is read out to the reverb processing section 23E of the DSP 23. FIG.

The fifth accumulation register 22E is a register for accumulating and holding waveform data for various types of expansion processing, and the content held therein is read out to the expansion processing section 23F of the DSP 23. FIG.

The DSP 23 has a sampling synchronization interrupt generator 23A, adders 23B and 23C, a chorus processing section 23D, a reverb processing section 23E, and an expand processing section 23F. The DSP 23 processes various types of waveform data that have been read out as necessary, puts them together, and outputs them as left and right channel stereo waveform data.

Since some processing of the sampling synchronization interrupt generator 23A includes the processing of the CPU 13, which is an external processor, rather than the processing within the DSP 23, in order to synchronize the sampling cycles between these processors. , generates an interrupt signal to the CPU 13 .

The chorus processing unit 23D uses waveform data for up to 64 channels to generate a chorus sound to be superimposed on the main sound, and outputs the obtained waveform data to the adders 23B and 23C as addends.

The reverb processing unit 23E uses waveform data for up to 64 channels to generate reverb sound to be superimposed on the main sound, and outputs the obtained waveform data to the adders 23B and 23C as addends.

The expand processing unit 23F executes various types of expansion processing based on software processing under the control of the CPU 13, and outputs waveform data to the adders 23B and 23C as addends. , the generated waveform data is sent to the RAM 15 to be written.

The adder 23B receives the accumulated waveform data of the right channel, which is the main sound, read out from the first accumulation register 22A, the waveform processed by the chorus processing section 23D, the reverb processing section 23E, and the reverb processing section 23E. data, and output the waveform data of the sum to the DAC 17 outside the sound source section 16 .

Similarly, the adder 23C processes the accumulated waveform data of the left channel, which is the main sound, read out from the second accumulation register 22B, the chorus processing section 23D, the reverb processing section 23E, and the reverb processing section 23E. The added waveform data is added, and the waveform data of the sum is output to the DAC 17 outside the tone generator section 16 .

FIG. 3 is a block diagram showing a common circuit configuration of the first accumulation register 22A to the fifth accumulation register 22E forming the mixer 22. As shown in FIG. Each of the accumulation registers 22A-22E is composed of an adder 41, an accumulator 42, a selector 43 and a register 44. FIG.

The waveform data input from the sound source channels 21-1, 21-2, . output to The accumulator 42 accumulates the waveform data from the adder 41 and outputs it to the selector 43 and the adder 41 . The selector 43 selects either the waveform data output from the accumulator 42 or the waveform data sent from the CPU 13 via the bus B according to a selection signal instructed by the CPU 13 via the bus B, 44 to hold. The contents held by the register 44 are appropriately read out by the CPU 13 , while the register 44 holds the waveform data output from the selector 43 according to the write signal wr from the CPU 13 and outputs the contents held to the DSP 23 .

In this way, the waveform data from the sound source channels 21-1, 21-2, . are weighted according to , and accumulated.

In the process, the CPU 13 reads the waveform data held in the register 44 , performs signal processing as necessary, and writes the processed waveform data through the selector 43 again. In this way, a hardware circuit configuration is adopted in which the CPU 13 can execute control with various effect processing and the like.

FIG. 4 is a functional block diagram showing the contents of software processing when the expansion processing unit 23F of the DSP 23 is used to perform distortion processing.

The drive adjustment multiplier 51 multiplies the input waveform data by the drive coefficient given from the CPU 13 and outputs the product waveform data to the shifter 52 . The shifter 52 amplifies the waveform data in accordance with the shift magnification given from the CPU 13 , for example, an amplification rate of up to 256 times, obtains the waveform data that is intentionally overloaded, and outputs the waveform data to the clip processor (CLP) 53 . .

The clip processing unit 53 performs processing based on a clip saturation function that converts the values of the overloaded waveform data into the maximum positive value and the minimum negative value to make the waveform continuous. Since the sound is greatly distorted by the processing in the clip processing unit 53 and harmonics are generated, the low-pass filter (LPF) 54 in the subsequent stage removes the harmonics and adjusts the sound quality to an appropriate sound quality before outputting.

FIG. 5 is a block diagram showing a configuration for generating waveform data when the drawbar organ is selected as the tone color by operating the tone color selection operator 12A. The drawbar organ basically has nine feet (wavelengths and pitches) as described above, and sound source channels 21-1, 21-2, . , the fifth accumulation register 22E of the mixer 22 accumulates 9 channels. In each sound source channel 21-1, 21-2, . compression/expansion and interpolation processing are performed, and the result of multiplication processing by the multiplier 34e by a multiplier corresponding to the operation amount of the corresponding drawbar operator 12B is output to the fifth accumulation register 22E.

The fifth accumulation register 22E accumulates and holds waveform data of the same scale for nine channels, and sequentially writes the held contents to the RAM 15 in accordance with the write address "WG write channel" 61 indicated by the CPU 13. .

This "WG light channel" 61 removes the address values corresponding to the sound source channels 21-1, 21-2, . content.

When generating the waveform data of each scale according to the operation amount of each drawbar of the drawbar organ and writing it to the RAM 15, the CPU 13 sends data to the multipliers 34a to 34d through the sound source channels 21-1, 21-2, . Let the multiplier be "0 (zero)". Therefore, the waveform data is not sent to the first accumulation register 22A to the fourth accumulation register 22D of the mixer 22, and is not generated as it is.

In this way, the waveform data stored in the RAM 15 corresponding to the operation amount of the drawbar operator 12B are read out, and the sound source channels 21-1, 21-2, . . . . 21-64 are used to generate the musical tones of the drawbar organ in the tone generator section 16 and output them.

At this time, the reason why the reproduction operation based on the waveform data is performed using any one of the sound source channels 21-110, . . . is an operation of writing waveform data to the RAM 15 using the sound source channels 21-1, 21-2, . , . . . 21-64 can be performed at least partially in parallel.

FIG. 6 shows waveforms executed by the CPU 13 by software processing using the fifth accumulation register 22E of the mixer 22 when the slicer is selected as one of the selections other than the drawbar organ by the tone color selection operator 12A. FIG. 4 is a diagram illustrating processing of data; The slicer is a function that turns sound on and off in time with the beat, and is a process based on store information managed by the CPU 13 , so it is considered a function suitable for software processing by the CPU 13 .

FIG. 6A exemplifies musical waveforms output when the slicer is selected. A musical tone is output only for the first half of each beat, and the output of the musical tone is stopped for the latter half of each beat.

FIG. 6B is a diagram for explaining the functions executed by the CPU 13 on software in principle by replacing them with electric circuits. In this case, the expand processing section 23F is used as a simple switching circuit, and the input musical tone and silence "0" are doubled if the tempo of the musical tone is set to 120 [bpm], for example. By switching in synchronism with the tempo at 240 [bpm], it is possible to output a sound with a musical tone waveform as shown in FIG. 6(A).

The operation of this embodiment will be described below.
FIG. 7 is a flow chart showing the contents of processing that is executed at any time mainly under the control of the CPU 13 when an operation for changing the timbre is performed by the timbre selection operator 12A. It should be noted that even if the timbre selection operator 12A is not operated to select a timbre, if some operation is performed with the drawbar operator 12B, the processing of FIG. 7 is similarly started from the beginning.

Initially, the CPU 13 initializes the tone generator section 16 (step S101). As a specific content of this initialization, all the multipliers to the multipliers 34a to 34e of the sound source channels 21-1, 21-2, . Processing includes disabling (impossible) transmission of an interrupt signal by the generator 23A to the CPU 13, temporarily prohibiting writing of waveform data to the fifth accumulation register 22E of the mixer 22, and the like.

Next, the CPU 13 determines whether or not the operation of the tone color selection operator 12A is for selecting the drawbar organ (step S102).
If the operation is for selecting the drawbar organ (YES in step S102), the CPU 13 supplies the multipliers 34a to 34d of the tone generator channels 21-1, 21-2, . While the multiplier is set to "0" to prevent waveform data from being accumulated in the first to fourth accumulation registers 22A to 22D, the sound source channels 21-1, 21-2, . The multiplier of each multiplier 34e of -9 is set to a value corresponding to the operation content of the drawbar operator 12B (step S103).

In this way, the CPU 13 generates waveform data of each scale corresponding to the operation of each drawbar of the second accumulation register 22B, and starts the operation of storing the waveform data in the RAM 15 (step S104). , returns to the waiting state for the next process.

Also, in step S102, if the operation of the tone color selection operator 12A is not the operation for selecting the drawbar organ (NO in step S102), then the CPU 13 determines whether the operation of the tone color selection operator 12A is set in advance. It is determined whether or not the operation to the tone color for which waveform data is created by the software processing of the CPU 13 itself, for example, the dance synth tone using the slicer effect (step S105).

If the operation of the tone color selection operator 12A is for a dance synth sound using the slicer effect (YES in step S105), the CPU 13 enables the sampling synchronization interrupt generator 23A of the DSP 23 to send an interrupt signal to the CPU 13. (possible).

In addition, the CPU 13, for example, among the sound source channels 21-1, 21-2, . 34d is set to "0" to prevent waveform data from being accumulated in the first to fourth accumulation registers 22A-22D, while the multiplier of the multiplier 34e of the sound source channel is set to "0". , is set to a specific value preset according to the slicer effect.

At the same time, the CPU 13 sets a process of creating waveform data by its own software processing and storing it in the RAM 15 (step S106), and then returns to the standby state in preparation for the next process.

As shown in FIG. 8, by allowing the sampling synchronization interrupt generator 23A of the DSP 23 to issue an interrupt signal, the CPU 13 sends an interrupt signal to the fifth accumulation register 22E each time an interrupt signal is received from the sampling synchronization interrupt generator 23A. 4 is a flow chart showing the contents of the process to be executed;

The waveform data initially held in the fifth accumulation register 22E is read out (step S201). The CPU 13 further applies slicer effect processing to the read waveform data (step S202). Then, the CPU 13 writes the processed waveform data again to the fifth accumulation register 22E (step S203), and returns to the standby state in preparation for the next processing.

By causing the sampling synchronization interrupt generator 23A to send an interrupt signal to the CPU 13 for each sampling cycle to execute such processing, the CPU 13 and the DSP 23, which are different processors, are synchronized with each other.

Regarding the slicer effect processing actually executed by the CPU 13, two types of interrupt processing are conceivable, and will be described with reference to FIGS. 9 and 10. FIG.

FIG. 9 is a flow chart showing the contents of processing executed in response to an interrupt signal generated every sampling period. The CPU 13 determines whether or not a flag "1" is set in a flag register called "Cut On" prepared inside the CPU 13 at that time in response to an interrupt signal generated at a constant sampling period (step S301). .

Here, if it is determined that the interrupt signal is at the timing position in the latter half of each beat shown in FIG. ), the multipliers to the multipliers 34a to 34e of any of the sound source channels 21-1, 21-2, . Assume that there is no waveform data to be written (step S302).

The CPU 13 returns to the standby state in preparation for the next process regardless of whether or not the process of step S302 is executed.

FIG. 10 is a flow chart showing the contents of processing executed in response to a bpm interrupt signal input to the CPU 13 according to the beat position set at that time. Here, as shown in FIG. 6, the case where the number of beats per minute (bpm) set at that time is 120 will be described.

The CPU 13 responds to the interrupt signal from the sampling synchronization interrupt generator 23A and determines whether or not the time point is the beat position, that is, the start position of the beat (step S401).

If it is determined to be a beat (YES in step S401), the CPU 13 sets the flag register "Cut On" to "1" (step S402), and returns to the standby state for the next process.

If it is determined in step S401 that the beat position is not reached at that time (NO in step S401), then the value of the bpm counter that counts beats inside the CPU 13 at that time becomes "120". It is determined whether or not it is the timing of the middle position of the beat (step S403).

When the value of the bpm counter is "120" (YES in step S403), the CPU 13 immediately resets the flag "1" of the flag register "Cut On" to "0" (step S404), Return to the standby state in preparation for the next process.

If the value of the bpm counter is not "120" in step S403 (NO in step S403), the CPU 13 waits until the value of the bpm counter reaches "120" and then resets the flag register "Cut On". is reset to "0" (step S404), and the process returns to the standby state in preparation for the next process.

In the CPU 13, tempo data for other sequencers and accompaniment performances, beat progress, bpm count progress values, etc., are managed at any time, and writing and reading to and from the fifth accumulation register 22E are performed as part of the sound generator. Since it is possible, the slicer effect can be realized by a simple processing flow chart as shown in FIGS.

Also, in step S105 of FIG. 7, if the operation of the tone color selection operator 12A is not a dance synth sound using the slicer effect (NO in step S105), then the CPU 13 determines that the tone color selection operator 12A has been operated. , it is determined whether or not the guitar sound accompanied by distortion is selected (step S107).

If the operation of the timbre selection operator 12A is to select a guitar sound accompanied by distortion (YES in step S107), the CPU 13 selects sound source channels 21-1, 21-2, . Among them, in the sound source channel assigned to generate the guitar sound, the multipliers to the multipliers 34a to 34d are set to "0", and the waveform data are accumulated in the first to fourth accumulation registers 22A to 22D. On the other hand, the multiplier of the multiplier 34e of the sound source channel is set to a predetermined value set in advance corresponding to the distortion, and the extended effect is put into use.

At the same time, the CPU 13 loads a distortion program for the guitar sound in the circuit section for processing the expansion effect of the DSP 23 (not shown in FIG. 2), and sets the waveform data held in the expand processing section 23F to be processed. Above (step S108), the process returns to the standby state in preparation for the next process.

Note that the expansion effect processing executed by the DSP 23 is not limited to the distortion of the guitar sound. MOD HPF that cuts to 20%, a filter that instructs various increase/decrease processing by setting the frequency range of the sound, an equalizer, and the like.

When executing these extension effect processes, the multipliers for the respective multipliers 34a to 34d of the sound source channels are set to other than "0", and the waveform data are accumulated in the first to fourth accumulation registers 22A to 22D. It may be processed to be output. ,
Also, in step S107, if the operation of the tone color selection operator 12A is not a selection operation for a guitar sound accompanied by distortion (NO in step S107), the CPU 13 determines the operation content of the tone color selection operator 12A. , among the tone generator channels 21-1, 21-2, . A preset multiplier is set so that the waveform data is accumulated in the first to fourth accumulation registers 22A to 22D, while the multiplier of the multiplier 34e of the sound source channel is set to "0", After setting so that the waveform data for extended processing is not accumulated in the fifth accumulation register 22E (step S109), the processing returns to the standby state in preparation for the next processing.

As described in detail above, according to this embodiment, each circuit in the tone generator can be effectively utilized.

In this embodiment, the DSP 23 is provided with an interrupt generator 23A for sampling synchronization, and when a tone color other than the drawbar organ is selected, a fifth accumulation register 22E is used to reduce the load on the DSP 23 and effect processing by the CPU 13. When waveform data is read and written by software by the CPU 13, an interrupt signal is sent as appropriate to ensure synchronization between the two processors, so that musical tones can be smoothly output.

Furthermore, in the present embodiment, when the timbre of the drawbar organ is selected by the timbre selection operator 12A, it functions as a drawbar. A drawbar operator 12B is further provided as a continuous operator that functions as an operator for adjusting parameters in the software.

As a result, it is possible to more realistically reproduce the operation for selecting the timbre of the drawbar organ, and also to effectively utilize the continuous operators used for these timbres when selecting other timbres.

It should be noted that the present invention is not limited to the above-described embodiments, and can be variously modified in the implementation stage without departing from the gist of the invention. Moreover, each embodiment may be implemented in combination as much as possible, and in that case, the combined effect can be obtained. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiments, the problems described in the column of problems to be solved by the invention can be solved, and the effects described in the column of effects of the invention is obtained, the configuration from which this constituent element is deleted can be extracted as an invention.

The invention described in the original claims of the present application is appended below.
[Claim 1]
a first processor;
a memory for storing waveform data;
a plurality of sound source channels each having a plurality of multipliers for outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory;
a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulation data;
a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in the plurality of accumulation registers;
a timbre selection operator for selecting one from a plurality of timbres including the timbre of a drawbar organ;
with
The first processor
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
electronic musical instrument.
[Claim 2]
2. The electronic musical instrument according to claim 1, wherein said software processing is effect processing including a slicer.
[Claim 3]
2. The electronic musical instrument according to claim 1, wherein said certain timbre is a synthesizer timbre.
[Claim 4]
The second processor is an interrupt generator for synchronizing both processors by transmitting an interrupt signal for executing software processing to the first processor when the certain tone color is selected. 4. The electronic musical instrument according to any one of claims 1 to 3, comprising:
[Claim 5]
5. The electronic musical instrument according to any one of claims 1 to 4, further comprising a drawbar operator for adjusting volume of each foot when a drawbar organ tone is selected by said tone color selection operator.
[Claim 6]
The first processor
setting a multiplier of zero to a multiplier corresponding to an accumulating register other than any of the accumulating registers when the timbre of the drawbar organ is selected based on the user's operation of the timbre selection operator; 6. The electronic musical instrument according to claim 5, wherein a multiplier corresponding to one accumulation register is set to a value corresponding to a user's manipulation of said drawbar operator.
[Claim 7]
A first processor, a memory storing waveform data, and a plurality of multipliers each outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory. a plurality of sound source channels, a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulated data; An electronic musical instrument comprising: a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in registers; A control method of
By the first processor,
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
A control method for an electronic musical instrument.
[Claim 8]
A first processor, a memory storing waveform data, and a plurality of multipliers each outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory. a plurality of sound source channels, a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulated data; An electronic musical instrument comprising: a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in registers; A program that runs in
By the first processor,
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
program.

10... Electronic musical instrument,
11... Keyboard part,
12... key operation unit,
12A... timbre selection operator,
12B... Drawbar operator,
13 CPU,
14 ROM,
15 RAM,
16... sound source section,
17 DACs,
18 ... amplifier (amp.),
19 ... speaker,
21-1 to 21-3 ... sound source channels,
22 ... mixer,
22A to 22E ... (first to fifth) accumulation registers,
23 DSP,
23A... Interrupt generator for sampling synchronization,
23B, 23C...adders,
23D ... chorus processing section,
23E... Reverb processing section,
23F ... expansion processing section,
41 Adder,
42... accumulator,
43... Selector,
44... register,
51 ... multiplier for drive adjustment,
52... Shifter,
53 ... Clip processing unit (CLP),
54 ... low pass filter (LPF),
61 ... "WG light channel",
B... bus,
CH... LSI chip.

Claims (8)

a first processor;
a memory for storing waveform data;
a plurality of sound source channels each having a plurality of multipliers for outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory;
a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulation data;
a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in the plurality of accumulation registers;
a timbre selection operator for selecting one from a plurality of timbres including the timbre of a drawbar organ;
with
The first processor
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
electronic musical instrument. 2. The electronic musical instrument according to claim 1, wherein said software processing is effect processing including a slicer. 2. The electronic musical instrument according to claim 1, wherein said certain timbre is a synthesizer timbre. The second processor is an interrupt generator for synchronizing both processors by transmitting an interrupt signal for executing software processing to the first processor when the certain tone color is selected. 4. The electronic musical instrument according to any one of claims 1 to 3, comprising: 5. The electronic musical instrument according to any one of claims 1 to 4, further comprising a drawbar operator for adjusting volume of each foot when a drawbar organ tone is selected by said tone color selection operator. The first processor
setting a multiplier of zero to a multiplier corresponding to an accumulating register other than any of the accumulating registers when the timbre of the drawbar organ is selected based on the user's operation of the timbre selection operator; 6. The electronic musical instrument according to claim 5, wherein a multiplier corresponding to one accumulation register is set to a value corresponding to a user's manipulation of said drawbar operator. A first processor, a memory storing waveform data, and a plurality of multipliers each outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory. a plurality of sound source channels, a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulated data; An electronic musical instrument comprising: a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in registers; A control method of
By the first processor,
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
A control method for an electronic musical instrument. A first processor, a memory storing waveform data, and a plurality of multipliers each outputting adjusted data obtained by adjusting the output level of generated data generated based on the waveform data read from the memory. a plurality of sound source channels, a plurality of accumulation registers for accumulating the adjustment data respectively output from the plurality of multipliers in the plurality of sound source channels and holding them as accumulated data; An electronic musical instrument comprising: a second processor for outputting a musical tone signal corresponding to the accumulated data respectively held in registers; A program that runs in
By the first processor,
when a timbre of the drawbar organ is selected based on a user operation on the timbre selection operator, the accumulated data held in one of the plurality of accumulation registers is stored in the memory; and reading the accumulated data stored in the memory into one of the plurality of sound source channels,
When a tone color other than the tone color of the drawbar organ is selected by the tone color selection operator, the accumulated data held in any of the accumulation registers is read, and holding result data obtained by executing software processing in any of the accumulation registers;
program.